Senior Software Engineer, Kraken.tech
Python
More information about location
End-to-end, AI powered operating system for utilities
Posted today
End-to-end, AI powered operating system for utilities
1001+ employees
Posted today
More information about location
1001+ employees
Company mission
To make a big green dent in the universe by helping utilities transform their operations to improve the lives of 1 billion people by accelerating the energy transition.
Role
Who you are
- We don’t expect everything, but experience in several of these areas will help
- Strong Python experience
- Experience building and operating backend services in production
- Comfort with cloud platforms, ideally AWS (Lambda, API Gateway, SQS, EventBridge, DynamoDB, S3)
- API design and domain modelling for complex business workflows
- Writing robust, typed, well tested code (pytest, CI, 100% branch coverage, a real interest in catching bugs before production)
- Strong communication and collaboration with both engineers and non engineers
- Judgement in ambiguity: you can make trade offs explicit and keep delivery moving
- You do not need a background in energy or mathematical optimisation. Curiosity about the domain and a willingness to learn from traders and data scientists matters more than arriving with grid expertise
- Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we’re looking for!
Desirable
- Experience in problem solving, modelling, optimisation
- Event driven or serverless architectures at meaningful scale
- Infrastructure as Code (CDK, CloudFormation, or Terraform)
- Experience with Pydantic, strict typing, and mypy
- Observability in production (CloudWatch, Grafana)
- Exposure to energy, trading, optimisation, or other constraint heavy domains
- Working in a monorepo with shared libraries and multiple deployable services
What the job involves
- We’re looking for a Senior Software Engineer to join Humboldt and help shape Asset Backed Trading as it grows into new countries and capabilities
- You will work in a Python monorepo of serverless services: event driven pipelines that ingest market and asset data, build optimisation problems, call solvers, and write dispatch and trading positions back out
- You will also help evolve the interfaces with other Flex services and APIs that Asset Backed Trading depends on
- Design, build and operate the Python backend services behind Asset Backed Trading
- Own event driven flows from trigger to dispatch: queues, lambdas, events, and the Flex API integrations around them
- Productionise new algorithms and market capabilities, working closely with data scientists so prototypes become reliable services
- Help with team discovery for new epics, spanning software architecture and energy systems modelling
- Improve reliability, latency, and operability through testing, monitoring, alarms, and careful refactoring
- Contribute to infrastructure as code (CDK / CloudFormation) and deployment pipelines
- Take part in architectural decisions as we grow Asset Backed Trading across EU markets and asset types
- Support teammates through pairing, reviews, and shared problem solving
- Help keep a high bar for typed, well tested Python in a domain where silent mistakes are expensive
- Our tech stack
- Backend and services
- Python 3.13, uv, Pydantic
- AWS Lambda, API Gateway, SQS, EventBridge, DynamoDB, S3
- Pytest, mypy, ruff in CI
- Mixed Integer Linear Programs for expressing energy storage problems (owned with data science; we integrate with the solver)
- Infrastructure and tooling
- AWS CDK (TypeScript) and CloudFormation
- Aws-lambda-powertools for observability
- CI/CD via AWS CodePipeline
- Grafana dashboards and CloudWatch alarms
- Product and analysis
- Databricks SQL, dashboards and notebooks for reporting
- Jupyter, numpy, pandas, plotly for investigation
- Cursor, Copilot, and a healthy amount of custom scripting
Our take
Kraken is an AI-powered platform for utilities, helping energy, water, and telecom companies automate their operations and improve customer service. Its an end-to-end solution making it easier for utilities to improve and cut costs while also enhancing their service quality.
Its success speaks for itself too, with clients like EDF, Tokyo Gas, and Octopus Energy. With over 60M customer accounts managed across 30 countries, Kraken is making waves by reducing operational costs by 40%, proving its ability to deliver results.
Most recently, the company acquired Jedlix, a leader in smart EV charging. This deal expands Kraken's ability to offer smarter, greener charging solutions and is a sure way for the company to see even more success as it continues to scale globally.
Kirsty
Company Specialist at Welcome to the Jungle
Meet the team
17 people
Nina Möger, Transformation Director
Insights
Company
Funding (1 round)
Dec 2025
$1bn
EARLY VC
Total funding: $1bn
Company benefits
- Equity option scheme: Everyone who works at Kraken owns a part of the business with shares in the Octopus Energy Group. So as the company grows we all benefit
- Holidays: We don't count your holiday days. We trust everyone to work hard and take as much time off as they need
- Flexible working: We're happy for you to work in a way that's best for you. Need to pick the kids up from school or work from home? That's not a problem. It's important to us that everyone has a positive work-life balance
- Free breakfast: Our offices are always stocked with fresh fruit, breakfast, snacks, great coffee and soft drinks. Weekly on a Friday we all get together (including virtually) for company updates and drinks
- For parents: We can arrange access to tax free childcare, as well as maternity and paternity pay
- Team events and activities: Participate in team events and cohesion activities to build stronger connections
- Pension scheme: We'll pay 5%. You decide on your contribution starting from 3%
- Free eye tests: We offer eye test vouchers for all colleagues who use Visual Display Units (VDU). Long spells of VDU work can be visually demanding so we want to make sure you're OK
- Car salary sacrifice: Save money on leasing an electric vehicle through our workplace salary sacrifice scheme
- Cycle to work scheme: Spread the cost of buying a bike, including accessories and safety equipment, up to a value of £2.5K. And save money on the repayments through the cycle to work scheme
- Get the right tech: Have a certain tech requirement? We’ll do our best to sort it for you
- Money coach: Get support with financial planning through our partnership with Octopus Money Coach
- Yoga + Headspace: Twice a week we have 45 Minute live yoga class open to all Kraken staff. Need some calm in your life? We have Headspace licences available
Company values
- Freedom & Responsibility
- Get Sh*t Done
- Customer Obsessed
Company HQ
Fitzrovia, London, UK
Articles
Leadership
Amir Orad
(CEO)Amir joined Kraken in 2024 as CEO. Prior to this, they were the CEO and Chairman at Sisense for over 8 years. They also worked at NICE Actimize for over 7 years, serving as the CEO for 4.
James Eddison
(Co-Founder & CTO)Experienced CTO having previously served at Tangent Comminutions, Tangent Labs, and Clairpoint.
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